Vendor advisories

Microsoft Security Response Center

Browse 4,355 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 5 hours ago Checked every 6 hours

4,355 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

RSS for these results
Microsoft Security Response CenterCVE-2026-64922
HighCVSS 4.6

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition
Fixed versions16.0.5565.1001, 16.0.10417.20198, 16.0.19725.20522
Vendor guidance

Install KB5002905. Install KB5002906. Install KB5002894. Install KB5002896. Install KB5002893.

Microsoft Security Response CenterCVE-2026-63521
HighCVSS 5.5

Microsoft Office Word Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.0.5565.1000
Vendor guidance

Click to Run Install KB5002901.

Microsoft Security Response CenterCVE-2026-63517
HighCVSS 5.5

Microsoft Office Graphics Component Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

Affected productsMicrosoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Office LTSC for Mac 2021
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.112.26081010, 16.0.5565.1001
Vendor guidance

Click to Run Release Notes Install KB5002897.

Microsoft Security Response CenterCVE-2026-62915
HighCVSS 6.5

Microsoft Exchange Server Security Feature Bypass Vulnerability

Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.

Affected productsMicrosoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.01.2507.072, 15.02.2562.046, 15.02.1748.049, 15.02.1544.044
Vendor guidance

Install KB5121576. Install KB5121573. Install KB5121574. Install KB5121575.

Microsoft Security Response CenterCVE-2026-62914
HighCVSS 7.3

Microsoft Exchange Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.

Affected productsMicrosoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.01.2507.072, 15.02.2562.046, 15.02.1748.049, 15.02.1544.044
Vendor guidance

Install KB5121576. Install KB5121573. Install KB5121574. Install KB5121575.

Microsoft Security Response CenterCVE-2026-62912
HighCVSS 6.5

Microsoft Exchange Server Denial of Service Vulnerability

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

Affected productsMicrosoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.02.2562.046, 15.02.1748.049, 15.01.2507.072, 15.02.1544.044
Vendor guidance

Install KB5121573. Install KB5121574. Install KB5121576. Install KB5121575.

Microsoft Security Response CenterCVE-2026-62910
HighCVSS 7.2

Microsoft Exchange Server Elevation of Privilege Vulnerability

Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Affected productsMicrosoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 14
Fixed versions15.02.2562.046, 15.01.2507.072, 15.02.1748.049, 15.02.1544.044
Vendor guidance

Install KB5121573. Install KB5121576. Install KB5121574. Install KB5121575.

Microsoft Security Response CenterCVE-2026-62909
HighCVSS 7.8

.NET Elevation of Privilege Vulnerability

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

Affected products.NET 10.0 installed on Linux, .NET 8.0 installed on Linux, .NET 9.0 installed on Linux, Microsoft Visual Studio 2026 version 18.8
Fixed versions10.0.11, 8.0.30, 9.0.19, 18.8.3
Vendor guidance

Install KB5122106. Install KB5122104. Install KB5122105.

Microsoft Security Response CenterCVE-2026-62908
HighCVSS 7.0

Windows Backup Engine Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62901
HighCVSS 7.5

.NET Denial of Service Vulnerability

Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.

Affected productsMicrosoft Visual Studio 2026 version 18.8, .NET 10.0 installed on Mac OS, .NET 10.0 installed on Linux, .NET 8.0 installed on Windows
Fixed versions18.8.3, 10.0.11, 8.0.30, 9.0.19
Vendor guidance

Install KB5122106. Install KB5122104. Install KB5122105.

Microsoft Security Response CenterCVE-2026-62900
HighCVSS 5.9

.NET Information Disclosure Vulnerability

Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network.

Affected productsMicrosoft Visual Studio 2026 version 18.8, .NET 10.0 installed on Mac OS, .NET 10.0 installed on Linux, .NET 8.0 installed on Windows
Fixed versions18.8.3, 10.0.11, 8.0.30, 9.0.19
Vendor guidance

Install KB5122106. Install KB5122104. Install KB5122105.

Microsoft Security Response CenterCVE-2026-62899
HighCVSS 5.9

.NET Security Feature Bypass Vulnerability

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

Affected products.NET 10.0 installed on Mac OS, .NET 10.0 installed on Linux, .NET 8.0 installed on Windows, .NET 8.0 installed on Linux
Fixed versions10.0.11, 8.0.30, 9.0.19, 17.14.38
Vendor guidance

Install KB5122106. Install KB5122104. Install KB5122105.

Microsoft Security Response CenterCVE-2026-62894
HighCVSS 7.8

Windows DWM Core Library Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418.

Microsoft Security Response CenterCVE-2026-62892
HighCVSS 7.0

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

Use after free in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.

Microsoft Security Response CenterCVE-2026-62877
HighCVSS 7.8

Windows Win32k Elevation of Privilege Vulnerability

Stack-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62876
HighCVSS 7.8

Windows Win32k Elevation of Privilege Vulnerability

Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62812
HighCVSS 7.8

Windows DHCP Server Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.26100.33296
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120233. Install KB5120228. Install KB5120418. Install KB5120386. Install KB5120385.

Microsoft Security Response CenterCVE-2026-62797
HighCVSS 7.8

Windows NTFS Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62796
HighCVSS 5.5

Windows NTFS Information Disclosure Vulnerability

Out-of-bounds read in Windows NTFS allows an authorized attacker to disclose information locally.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62795
HighCVSS 8.8

Windows LDAP - Lightweight Directory Access Protocol Remote Code Execution Vulnerability

Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Microsoft Security Response CenterCVE-2026-62798
HighCVSS 5.5

Win32k Information Disclosure Vulnerability

Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.

Affected productsWindows Server 2025 (Server Core installation), Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
Fixed versions10.0.26100.33296, 10.0.26100.33222, 10.0.26200.9168, 10.0.26200.9106
Vendor guidance

Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.

Microsoft Security Response CenterCVE-2026-62787
HighCVSS 7.5

Windows DNS Server Remote Code Execution Vulnerability

Use after free in Windows DNS allows an authorized attacker to execute code over a network.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.26100.33296
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120233. Install KB5120228. Install KB5120418. Install KB5120386. Install KB5120385.

Microsoft Security Response CenterCVE-2026-62784
HighCVSS 8.8

Microsoft Local Security Authority Server (lsasrv) Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to execute code over a network.

Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9121, 10.0.20348.5499, 10.0.20348.5440, 10.0.19044.7663
Vendor guidance

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000. Install KB5120418. Install ...

Before you act

Start with the vendor's bulletin.

We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.

Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

Read how SecurityAlert collects and checks threat intelligence.